Shade-roller.



C. W. KIRSCH.

SHADE ROLLER.

APPLICATION FILED MAY3I. 1912.

Patented Sept. 18, 1917.

2 SHEETS-SHEET 1.

C. W. KIRSCH.

SHADE ROLLER.

APPLICATION FILED MAY31. 1912.

1 240,579 Patented Sept. 18, 1917.

2 SHEETS-SHEET 2.

J/QflMZAM I QW M 6 (41 CHARLES W. KIRSCH, OF STUBGIS, MICHIGAN.

SHADE-ROLLER.

Specification of Letters Patent.

Patented Sept. 18, 1917.

Application filed May 31. 1912. Serial No. 700,650.

others skilled in the art to which it apper tains to make and use thesame.

This invention has for its object to provide an improved shade roller,and consists in the features of construction and combinations of partshereinafter fully described and particularly claimed.

In the accompanying drawings illustrating a suitable embodiment of theinvention:

Figure -1- is a view in elevation partly broken away of a windowequipped with a shade roller embodying my invention.

Fig. -2- is a vertical transverse section through the window casingshowing the shade roller in end elevation and the hanger therefor inside elevation.

Fig. 3-- is a central longitudinal section of the shade roller, thehangers therefor being shown in horizontal section.

Fig. 4 is a fragmentary central longitudinal section of one end of theroller showing the ratchet and dogs for preventing the turning of theshade roller on its axis by its engaging spring.

Fig. 5 is a detail transverse section on the line 55 of Fig. t-.

Fig. 6 is a detail transverse section of the shade roller on the line6-6 of Fig. 3-.

Fig. 7- is a detail perspective view of the member carrying the ratchet.

Fig. 8 is a fragmentary detail longitudinal section of a member engagedwith one end of the spring of the roller and with the shade roller forpreventing rotation of said end of said spring relatively to saidroller.

Fig. --9 is a detail perspective view of the member shown in Fig. 8.

My invention has for its main object to provide a shade roller which isvery simple, efiicient, durable and inexpensive.

The invention consists more particularly in certain details ofconstruction whereby end of a shaft 8 is adapted to project.

new and useful results are obtained as will be hereinafter particularlypointed out.

The said roller comprises a cylindrical member 1 of wood, or the like,which is provided centrally with a longitudinal bore 2 square incross-section and which may be of any desired length relatively to theroller, preferably, however, being of just suflicient length toaccommodate the helical spring 3 of the length necessary to insureenough coils to rotate the roller a sufiicient number of times to windup about one'and one-half to two times the len th of the window shademounted thereon. aid roller is provided in one end with a pivot pin 4twhich is adapted to be rotatably engaged in the hanger 5 in any usual orwell-known manner. Mounted upon the other end of the roller is a cap 6having a central dished portion 7 provided with a central openingthrough which lqpe 1e projecting end 9 of said shaft 8 is provided atdiametrically opposite points with recesses 10 in which the arms of ahanger 11 engage, said shaft being thus rendered nonrotatable relativelyto said hanger 11.

Contiguous to thesaid end portion 9 of said shaft the same is providedwith an illtegral ratchet 19. having two teeth disposed at diametricallyopposite points as more particularly shown in Fig. 5. The said ratchet12 is of greater diameter than the central opening in the dished portion7 and is engaged in the latter and held therein by means of a retainingplate or washer 13 which is driven into the cap 6 or otherwise suitablysecured therein. The shaft 8 may be of any desired length relatively tothe roller 1 and projects into said central square bore 2 of the latter.Rotatably mounted upon the inner end of said shaft is a flat member orplate 14. preferably made of sheet metal shaped to form a hollowcylindrical shank 15 at oneend thereof in which the inner end of saidshaft 8 is received, the body of said member consisting of two opposedflanges between which one end of the spring 3 is adapted to be engaged,as shown in Figs. -3, -6 and 8. The width of the flat portion of saidmember 14 is preferably greater than the diagonal of the bore 2 so as tobe incapable of rotation therein and is thus adapted to hold the end ofthe spring engaged therewith against rotation in said bore. The saidspring 3 is secured at its other end to the other end portion of saidshaft 8 by welding or otherwise securing the same thereto.

The dished portion 7 of said cap 6 is extended radially at diametricallyopposite points to form two runways for plungers or dogs 16 which areloosely and movably mounted therein and held therein by means of saidplate or washer 13. Each of said plungers is adapted to engage in theratchet 12 of said shaft 8 to prevent rotation thereof relatively tosaid cap 6 in one direction.

The hangers 5 and 11 consist preferablyof wire hooks and each comprisesthe shank 17 threaded at one end and terminating at its other end in aU-shaped hook the arms of which extend perpendicular to said shank.

17, the outer or free arm thereof being of greater length than the innerarm thereof and having its nose portion bent toward the inner arm, as at18, parallel with said shank. The said projection 18 thus formed acts toprevent the ready removal of the shaft 8 and pivot pin 4 from the hangeras will be obvious.

The operation of my said shade roller is not different from that ofothers in common use; the plungers 16 employed in place of the pivoteddogs afiordinv advantages of greater simplicity and less liability toinjury, displacement or binding, than is presented by the pivoted dogsand similar devices heretofore employed in shade rollers.

The present invention also presents advantages in that the spring 3 iscoiled over the shaft 8 so that it cannot possibly be wound up to apoint at'which any coil thereof may be bent over at a sharp angle andbe. thus" broken. -By employing the shaft the tension limit on thespring will be reached when the coils of the latter be cometightly woundaround said shaft 8. The latter also presents the advantage ofpreventing the member 14 from moving toward the cap 6 as the spring isplaced under tension by unwinding the shade from the roller and thecoils are, therefore, obviously prevented from overlapping each otherwhich is exceedingly disadvantageous.

In my present construction by removing the two tacks or screws securingthe cap 6 to the end of the roller the said cap together with the shaft-8 and the parts connected therewith may all be readily removed from theroller for purposes of inspection, repair and replacement.

The whole contrivance is extremely simple, durable and efficient.

The main objects attained are the prevention of excessive tension on thespring, the overlapping of the coils of the latter in placing the sameunder tension or during expansion thereof as could easily occur if themember 14 should fail to return to its normal position after being movedtoward plate 6 as the spring is placed under tension.

I claim as my invention:

1. A shade roller including a roller member having a longitudinal boreof rectangular section, and a shaft comprising two alined sections, onesection of said shaft being disposed partly within the bore of theroller and being flattened at its inner end to a width greater thaneither side dimension of the said rectangular section.

2. A shade roller including a roller member having a longitudinal boreof rectangular section, a tubular shaft projecting into said bore andflattened within said bore to a width substantially equal to thediagonal of said rectangular section, and a coiled spring encirclingsaid shaft and secured at one end to the said flattened portion of thelatter.

In testimony whereof I have signed my name in presence of twosubscribing wit- M. M. BOYLE, RUDOLPH WM. Loan.

